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Maîtrise des flux de gènes chez le colza : Etude ex-ante de l'impact de différentes innovations variétales

Abstract : Harvest contaminations in rapeseed can occur via gene flow (pollen, seeds or volunteers). Some cropping techniques and varietal traits can influence these gene flow. This study focused on evaluating the positive or negative impacts of some varietal traits on the management of intraspecific gene flow.
The GENESYS-RAPE model was chosen to evaluate this impact on different cropping situations. It simulates the effect of some cropping techniques and varietal traits on gene flow. Measurements were done of the effect of competitivity, autogamy rate and pollen emission on gene flow and to measure their variation scales. New genes were added to the model to simulate these traits. The model was used to estimate the effect of genotypical parameters on gene flow. The most pertinent were autogamy and pollen emission rate for gene flow between plots and plant height for contamination in the succeeding rapeseed crops. Other simulations were done to answer questions of the rapeseed production path.
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Submitted on : Monday, April 5, 2004 - 5:52:22 PM
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  • HAL Id : tel-00005713, version 1

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Agnès Fargue. Maîtrise des flux de gènes chez le colza : Etude ex-ante de l'impact de différentes innovations variétales. Autre. INAPG (AgroParisTech), 2003. Français. ⟨NNT : 2002INAP0049⟩. ⟨tel-00005713⟩

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